Global Patent Index - EP 2644887 A3

EP 2644887 A3 20170705 - Method of rotor-stall prevention in wind turbines

Title (en)

Method of rotor-stall prevention in wind turbines

Title (de)

Verfahren zur Verhinderung von Strömungsabriß in Windturbinen

Title (fr)

Procédé de prévention de décrochage aérodynamique dans des turbines éoliennes

Publication

EP 2644887 A3 20170705 (EN)

Application

EP 13161166 A 20130326

Priority

US 201213430930 A 20120327

Abstract (en)

[origin: EP2644887A2] A method 400 for operating a wind turbine 100 is based on providing a wind turbine 100 that includes a control system 112 programmed to adjust a blade pitch angle of one or more rotor blades 108 without knowledge of rotor blade efficiency. A blade pitch angle of one or more rotor blades 108 is adjusted in response to the current conditions experienced by the wind turbine 100 to provide a blade pitch angle that is greater than or equal to a blade pitch angle necessary to maintain a predetermined minimum rotor stall margin according to modeled aerodynamic performance of the rotor blades 108 such that continuous operation of the wind turbine 100 is maintained without transitions to the stalled mode.

IPC 8 full level

F03D 7/02 (2006.01)

CPC (source: EP US)

F03D 7/0224 (2013.01 - EP US); F03D 7/0244 (2013.01 - EP US); F03D 7/0256 (2013.01 - EP US); Y02E 10/72 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2644887 A2 20131002; EP 2644887 A3 20170705; EP 2644887 B1 20230322; CA 2810157 A1 20130927; CA 2810157 C 20200414; DK 2644887 T3 20230619; ES 2947764 T3 20230818; US 2013259682 A1 20131003

DOCDB simple family (application)

EP 13161166 A 20130326; CA 2810157 A 20130322; DK 13161166 T 20130326; ES 13161166 T 20130326; US 201213430930 A 20120327